Add waiting system application files

- Add main application files (main.py, models.py, schemas.py, etc.)
- Add routers for all features (waiting, attendance, members, etc.)
- Add HTML templates for admin and user interfaces
- Add migration scripts and utility files
- Add Docker configuration
- Add documentation files
- Add .gitignore to exclude database and cache files

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

migrations/add_keypad_settings.py

@@ -0,0 +1,29 @@
+"""Add keypad style settings to store_settings
+
+Revision ID: add_keypad_settings
+Create Date: 2025-12-09
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+def upgrade():
+    # Add keypad_style column
+    op.add_column('store_settings', 
+        sa.Column('keypad_style', sa.String(), nullable=True, server_default='modern')
+    )
+    
+    # Add keypad_font_size column
+    op.add_column('store_settings',
+        sa.Column('keypad_font_size', sa.String(), nullable=True, server_default='large')
+    )
+    
+    # Update existing rows to have default values
+    op.execute("UPDATE store_settings SET keypad_style = 'modern' WHERE keypad_style IS NULL")
+    op.execute("UPDATE store_settings SET keypad_font_size = 'large' WHERE keypad_font_size IS NULL")
+
+
+def downgrade():
+    op.drop_column('store_settings', 'keypad_font_size')
+    op.drop_column('store_settings', 'keypad_style')